All About Entropy… – Part I – Beginnings

If someone points out to you that your pet theory of the universe is in disagreement with Maxwell's equations - then much the worse for Maxwell’s equations. If it is found to be contradicted by observation—well, these experimentalists do bungle things sometimes. But if your theory is found to be against the Second Law of …

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Turbulence Modeling – Near Wall Treatment

Most of nowadays CFD simulations are conducted with the Reynolds Averaging approach. Reynolds Averaged Navier-Stokes (RANS) simulation, the "working horse" of industrial CFD is based on the Reynolds decomposition according to which a flow variable is decomposed into mean and fluctuating quantities. When the decomposition is applied to Navier-Stokes equation an extra term known as the Reynolds …

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SRS as Part 0f Daily Engineering Routine

"Science is the study of what Is, Engineering builds what Will Be. The scientist merely explores that which exists, while the engineer creates what has never existed before..." - Theodore von KarmanTwo main reasons for using SRS models shoud generally be mentioned. The first is for applications of which additional information that cannot be obtained …

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Large Eddy Simulation (LES) of Tunnel Pool Fire and calculation Infra Red absorption Coefficients of Soot Particles

1. Introduction Tunnel development is proceeding to reduce transportation time and to achieve efficient use of space. Maintenance and management of these tunnels are now important, due to increased demand for greater use and the needs for construction of tunnels [1]. Therefore, because of increased usability of tunnels, the prevention of fire and emergency evacuation …

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CFD SIMULATION OF ETHANOL STEAM REFORMING FOR MARINE STIRLING ENGINE

1. INTRODUCTION  External combustion engines, like the Stirling engine, have benefits over their internal combustion counterparts due to their ability to remain completely sealed from the elements and their nearly silent operation. Stirling engines are inherently robust, quiet, and only require an external heat source for operation. These characteristics make these engines ideal candidates for …

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